Preservers
n. 保护者, 保存者( preserver的复数形式 )
🗣️ 情景例句
When did the Roman Empire come into being?
罗马帝国是什么时候形成的？
Let's take a vote.
我们来表决吧！
as the wave leaves the particles behind back to its starting point again.
当波浪把微粒留在身后时又回到出发点。